椰油基二胍盐的制备及其复配体系的性能应用

Preparation of N-coconut-1,3-propylbisguanidine acetate salt and application performances of compounded systems

摘要:

以N-椰油基-1,3-丙撑二胺（CPDA），单氰胺和醋酸为原料，合成了椰油基丙撑醋酸二胍盐（CPGA）。利用FTIR和基质辅助激光解吸飞行时间质谱（MALDI-TOF MS）对产物结构进行鉴定。研究了CPGA与三种阴离子表面活性剂〔脂肪醇醚羧酸盐（AEC9-Na），月桂醇聚氧乙烯(3)醚硫酸钠（AES），十二烷基苯磺酸钠（LAS）〕和两种非离子表面活性剂〔脂肪醇聚氧乙烯(9)醚（AEO9），C12~14烷基聚葡萄糖苷（APG1214）〕组成的五种复配体系的稳定性、润湿性能、乳化性能、泡沫性能、去污性能和抑菌性能。结果表明，AEC9-Na/CPGA复配体系外观澄清透明，润湿、乳化、泡沫、去污和抑菌性能良好，在浓度0.02 g/L下对金黄色葡萄球菌的抑菌率达到75%，对大肠杆菌的抑菌率达到91%，优于其他四种复配体系，在抑菌洗涤剂方面有很好的应用前景。

Abstract:

N-coconut-1,3-propylbisguanidine acetate (CPGA) was synthesized from N-coconut-1,3-propyldiamine (CPDA), cyanamide and acetic acid. The product was characterized by FT-IR and MALDI-TOF MS. The stabilities, wettabilities, emulsification abilities, foam properties, detergency performances and bacteriostatic activities of CPGA compounded with three anionic surfactants (fatty alcohol carboxylate AEC9-Na, sodium lauryl polyoxyethylene (3) ether sulfate AES, sodium dodecyl benzene sulfonate LAS) and two non-ionic surfactants (fatty alcohol polyoxyethylene ether AEO9, C12~14 alkyl polyglucoside APG1214) were studied. The results showed that the AEC9-Na/CPGA compounded system was transparent, which exhibited the excellent wettability, emulsification ability, foam property, detergency performance and bacteriostatic activity，especially the bacteriostatic rate of Staphylococcus aureus and Escherichia coli reached 75% and 91% at the concentration of 0.02 g/L, superior to the other four compounded systems. Therefore, the AEC9-Na/CPGA compounded system had a good development prospect in antibacterial detergents.